On a non-mercedes I had had the wiring on the coolant fan short and burned the fuse and the resulting overheating caused the plastic radiator tank to split 6 inches dump out the coolant.
It is a front wheel drive so there is no mechanical fan at all.

The above is one of the risk factors if you only have an Electric Cooling Fan.

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84 300D, 82 Volvo 244Gl Diesel